Boas, F. (1911). The handbook of American Indian languages. Washington DC: Smithsonian Institute.
Chomsky, N. (1965). Aspects of the theory of syntax. Boston: MIT Press.
Lewis, H. (2001). Boas, Darwin, Science and Anthropology. Current Anthropology 42(3): 381-406
Whorf, B.L. (1941). The relation of habitual thought and behavior to language in Language, culture, and personality, essays in memory of Edward Sapir. (L. Spier, ed.) Menasha, Wis.: Sapir Memorial Publication Fund.